SpaceAtlas Space Object Data
NASA JPL SBDB · 2025 CK

2025 CK

2025 CK belongs to the Apollo group of near-Earth asteroids, whose orbits cross the path of Earth; with a semi-major axis of 1.064 AU it takes 1.10 yr to circle the Sun.

Apollo Observations: 43
Orbital Period · P
1.10 yr
v(q)
33.2 km/s
v(Q)
25.1 km/s
Diameter · ≈
0.01 km
TJ
5.78
Eccentricity · e
0.1373

Orbit and dynamics

Between its closest point (0.918 AU) and its farthest (1.21 AU), the heliocentric distance changes by 0.292 AU over every revolution.

One full revolution takes 1.10 yr (401 days), computed from the semi-major axis of 1.064 AU.

An eccentricity of 0.137 makes the orbit moderately elongated.

The orbital plane is tilted 5.79° relative to the ecliptic.

By the vis-viva equation its orbital speed rises to 33.2 km/s at perihelion and falls to 25.1 km/s at aphelion.

Because q < 1 AU and Q > 1 AU, this orbit geometrically intersects the region of Earth's orbit.

Size and surface

No direct size measurement is available; from an absolute magnitude of H = 28.25 and an assumed geometric albedo of 0.14, the diameter works out to roughly 0.01 km.

Observation record and orbit quality

Astrometry from 43 individual observations underpins this orbit; the fit leaves an RMS residual of 0.3824 arcseconds.

Condition code U = 6 indicates a moderately constrained orbit; predictions decades ahead still carry noticeable uncertainty.

About these computed values

Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Orbital Parameters

Semi-Major Axis
1.064 AU
Eccentricity
0.1373
Perihelion
0.918 AU
Aphelion
1.210087 AU
Inclination
5.79°
Orbital Period
— yr
Epoch
2461200.5
Mean Anomaly
21.46°

Orbit diagram

The Sun sits at the focus (orange). Earth's orbit is the grey circle at 1 AU. The red dot marks the object's position at the catalog epoch.

3D orbit (interactive)

Drag to rotate; scroll or pinch to zoom. The Sun is at the focus (orange), Earth's orbit is the grey ring at 1 AU, and the red dot marks the object's current position.

Close approaches

Predicted close approaches to Earth, from NASA's Center for Near-Earth Object Studies (CNEOS).

Date (UTC)Miss distanceVelocity
2036-Feb-01 13:18 0.133879 AU
20028040 km
9.47 km/s
2037-Jul-21 14:39 0.089604 AU
13404639 km
7.89 km/s
2048-Jul-18 06:11 0.035611 AU
5327372 km
4.37 km/s
2070-Feb-05 17:41 0.013363 AU
1999129 km
6.42 km/s

Distances in astronomical units (AU) and kilometres. Source: NASA/JPL CNEOS Close Approach Data API.

Physical Parameters

Diameter
— km
Albedo
—
Density
— g/cm³
Rotation Period
— h
Absolute Magnitude
28.25

Orbit Quality

RMS
0.38235
Condition
6
Orbit ID
—
Data source: NASA JPL Small-Body Database · NASA CNEOS. Orbital periods, perihelion and aphelion speeds, and diameter estimates on this page are computed by SpaceAtlas from the JPL SBDB orbital elements. They are derived quantities, not values copied from the source catalogue.

Keep exploring

Explore asteroids, comets and near-Earth objects with JPL orbital data.